I'm looking at next year for Northumberland Triple, there is enough interest to make it a goer. In the meantime the left field thing on the previous page is an option.
The chippy is still there, but for a proper culinary experience you need to visit either the Teesdale Hotel or the Forrestors, the beer is pretty good to. As I keep saying to folks come up, it's a riding paradise.
It will most likely be May if I can swing it, the weather is often good and the midges ain't made a showing by then. I'll get something organised later this year to give everyone enough time to book hols and rooms for those wusses that won't camp.
Putting this on the 'northern' thread and not the 'Teesdale' for consideration by those wanting to explore Northumberland. (There will always be other Teesdale trips).
Take a look at Alnwick Rugby Club as a possible campsite: https://www.ukcampsite.co.uk/sites/details.asp?revid=5468
I've not checked prices or availability but if you want to visit Lindisfarne, start out 30 minutes away, not over 2 hours away. Simples.
On the other hand I've looked at Clennel Hall from Steves original post and it looks pretty interesting. It even has bunk rooms for those who want to re-live their youth hostelling days 👍